It is likely that the variation in J with grain boundary misorientation is similar in all c high-T superconductors. Hence,thelow J observedinrandomlyorientedpolycr- c c tallineHTScanbeunderstoodonthebasisthatthepopulationoflowangleboundaries issmallandthatfrequenthighangleboundariesimpedelong-rangecurrent?ow. - ingconventionalprocessingtechniques,threeHTSmaterialsweresuccessfullyfab- catedinpolycrystallineformwithmodestJ 's. ThesearetheBi-2223powder-in-tube c conductors,theTl-1223spray-pyrolyzed?lmsandtheBi-2212melt-processedthick ?lms. Thesethreetypesofconductorscomprisedthe First-GenerationHTScond- torsorwires.

Zusammenfassung
This volume comprises six chapters on aspects of fundamental and applied electrochemical science that will be of interest both to researchers in the basic areas of the subject and to those involved in aspects of electrochemical technologies. Chapter 1 is the first part of a 2-part, major contribution by Joachim Maier on Solid State Electrochemistry: Thermodynamics and Kinetics of Charge Carriers in Solids. Part 2 will follow in volume 39 to be published in year 2005. This contribution reviews modern concepts of the equilibria involving charge carriers in solids in terms of concentrations of defects in solids and at grain-boundaries, including doping effects. Complementarily, kinetics of charge transfer and ion transfer are treated in some detail in relation to conductance, kinetics of surface processes and electrode-kinetics involving solid-state processes. This chapter will be of major interest to electrochemists and physicists in the semiconductor field and that involving ionic solids. In the second chapter, Appleby presents a detailed discussion and review in modern terms of a central aspect of electrochemistry: Electron Transfer Reactions With and Without Ion Transfer. Electron transfer is the most fundamental aspect of most processes at electrode interfaces and is also involved intimately with the homogeneous chemistry of redox reactions in solutions.

Inhalt
Methods to Produce Biaxially Textured Substrates.- IBAD Template Films for HTS Coated Conductors.- Epitaxial Superconductors on Rolling-Assisted-Biaxially-Textured-Substrates (RABiTS).- Inclined Substrate Deposition.- ISD by Thermal Evaporation.- Methods of YBa2Cu3O7?? Deposition and Related Issues.- Pulsed Laser Deposition of YBa2Cu2O7?? for Coated Conductor Applications: Current Status and Cost Issues.- Methods of HTS Deposition: Thermal Evaporation.- Sputtering of Y1Ba2Cu3O7??.- Pulsed Electron-Beam Deposition of High Temperature Superconducting Films for Coated Conductor Applications.- BaF2 Post-Deposition Reaction Process for Thick YBCO Films.- Issues and Progress Related to the Continuous Ex-Situ BaF2 Processing of Long-Length YBCO Coated Conductors.- Solution Deposition of Yba2Cu3O7?? Coated Conductors.- Non-Fluorine Based Bulk Solution Techniques to Grow Superconducting YBa2Cu3O7?? Films.- Jet Vapor Deposition for Continuous, Lowcost Manufacture of High Temperature Superconducting Tape.- Processing of Long-Length Tapes of High-Tempera Ture Superconductors by Combustion Chemical Vapor Deposition.- MOCVD Growth of YBCO Films for Coated Conductor Applications.- LPE Processing for Coated Conductor.- Deposition of Other HTS Materials.- Ex-Situ Processing of Ti-Containing Films.- Epitaxy of Hg-Based High-Tc Superconducting Thin Films.